<template>
    <div class="header-box" >
     <h3> 这是头部 </h3>
    </div>
</template>


<style lang= "stylus" scoped>
 .header-box
    height  3.2rem
    background red

  h3
   color black 
   text-align center
   height  3.2rem 
   line-height 3.2rem
    
</style>

